[Bug 625097] Re: Linux kernel not recognizing version 1.0 raid superblocks

[Quinn Plattel]

Hi,

dmesg and /var/log/syslog show this when trying to "mdadm --auto-detect":
Aug 27 07:25:42 ubuntu kernel: [ 1593.621934] md: Autodetecting RAID arrays.
Aug 27 07:25:42 ubuntu kernel: [ 1593.621943] md: Scanned 0 and added 0 devices.
Aug 27 07:25:42 ubuntu kernel: [ 1593.621947] md: autorun ...
Aug 27 07:25:42 ubuntu kernel: [ 1593.621950] md: ... autorun DONE.

mdadm -E /dev/sda1 shows this:
/dev/sda1:
          Magic : a92b4efc
        Version : 1.0
    Feature Map : 0x0
     Array UUID : 1d734c56:acf57666:ded9aab5:20101f53
           Name : ubuntu:0  (local to host ubuntu)
  Creation Time : Fri Aug 27 07:06:32 2010
     Raid Level : raid1
   Raid Devices : 2

 Avail Dev Size : 2097096 (1024.14 MiB 1073.71 MB)
     Array Size : 2097096 (1024.14 MiB 1073.71 MB)
   Super Offset : 2097104 sectors
          State : clean
    Device UUID : eeae9cba:5f0075c2:079dd9fc:7fe870b6

    Update Time : Fri Aug 27 07:06:32 2010
       Checksum : d7147759 - correct
         Events : 0


    Array Slot : 0 (0, 1)
   Array State : Uu

"cat /proc/mdstat" shows this if we "mdadm --assemble --scan":
Personalities : [raid1] 
md0 : active raid1 sda1[0] sdb1[1]
      1048548 blocks super 1.0 [2/2] [UU]
      
unused devices: <none>


Hope this information helps,

br,
Quinn

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Linux kernel not recognizing version 1.0 raid superblocks
https://bugs.launchpad.net/bugs/625097
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